Wall hook



FIG. 1 is a front view of a wall hook;

FIG. 2 is a a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is bottom plan view thereof; and,

FIG. 7 is a perspective view thereof. 

CLAIM The ornamental design for a wall hook, as shown and described. 